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toro groundsmaster

Discussion in 'Toro' started by emorri, Mar 2, 2010.

  1. emorri

    emorri LawnSite Member
    Messages: 16


    we have two of the older groundsmaster 120 machines,that we use only for snow removal.

    is the new toro hyper oil a good choice for these machines? we have them out in 30 below zero for 10 or 12 hours at a time. is it suitable for cold weather use?

    Eric quality lawn care
  2. The Toro Company

    The Toro Company LawnSite Senior Member
    Messages: 354

    Emorri -

    Oil in cold temperatures is measured by the Pour Point, which is the lowest temperature at which the oil will still flow. The Pour Point of synthetic oil, as is Hyper-Oil, takes a lower temperature to solidify than comparable petroleum based oils. Hyper-Oil will be the better choice for the cold temperatures.

    Hyper-Oil can be used in the Ground Master 120.

    As stated above, Hyper Oil is synthetic oil and is not recommended to be mixed with Petroleum oil. The current oil will have to be flushed from the Ground Master 120 system.

    · Use Hyper-Oil to flush the hydraulic system of the old oil.
    · Gravity drain the old oil to the best of your ability.
    · Lift drive unit off the ground so wheels are not touching the floor.
    · Fill hydraulic system with new Hyper-Oil.
    · Disconnect return hydraulic line prior to the reservoir tank.
    · Start unit and operate drive and hydraulic system. (Keeping oil reservoir full during this process).
    · Once new oil is present in the return hydraulic line, reconnect return hydraulic line.
    · Fill reservoir with Hyper-Oil

    - The Toro Company
  3. emorri

    emorri LawnSite Member
    Messages: 16

    hi again,

    we have been running mobil 1 in these machines for the last two years. would i be able to skip the flush and go right to hyper oil. then just do my normal oil and filter change ?

    i will do the flush if you think it is needed, i just do not want to waste the hyper oil unless it is needed.

    thanks qlc
  4. The Toro Company

    The Toro Company LawnSite Senior Member
    Messages: 354

    Emorri -

    Thank you for choosing Toro Hyper-Oil. It is an excellent replacement for the Mobil 1 oil. It is always best practice to minimize the mixing of the old oil with new oil, especially when maintaining a hydraulic system. When draining the old oil from your hydraulic system identify the oil condition to determine if a flush is needed. Whenever oil has a fowl odor, dark brown to black color, silver appearance, or a creamy color (may indicate moisture)than the hydraulic system should be flushed. When oil contamination is not identified than just draining the oil without a flush should be sufficient.
    The model number is not identified but the Toro Z Mower hydraulic system can be gravity drained by removing both hydraulic lines at each wheel motor. When the hydraulic filter is removed this should drain the filter head and connecting hydraulic lines. Prior to connecting the hydraulic lines back to the wheel motors you can add the Toro Hyper-Oil. This will provide a gravity flush from the reservoir up to the wheel motors. The wheel motors are the only components with any significant amount of old oil in them. Depending on the condition of your old oil you will have to decide if the wheel motors should be flushed of the old oil or not.
    When reinstalling the wheel motor hydraulic lines, inspect the o-rings on the hydraulic fittings to assure they are in good condition or replace as necessary. Install a new Toro hydraulic filter also.

    -The Toro Company
  5. lilweeds

    lilweeds LawnSite Senior Member
    Messages: 595

    Where all of the Grandstands shipped with Hyper-oil? If not I know I mixed oils....
  6. emorri

    emorri LawnSite Member
    Messages: 16


    just to be sure,this machine we are talking about is a toro groundsmaster 120.

  7. The Toro Company

    The Toro Company LawnSite Senior Member
    Messages: 354

    Lilweeds -

    Yes, HYPR-Oil was shipped in 2009 GrandStands.

    -The Toro Company

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